Driving mechanism.



Patented July 3, |900.

No. '1353,l23.

A. E. H. .L THDELLDEN. DRIVING MECHANISM.

(Application led Apr. 19, 1900.)

(No Model.)A

TELE- E- WTNESSES @uw Q ma Norms Urns cui. PHOTO-Limo., wAsnmaran. D. c.

iED STATES PATENT DRIVING MECHANISM.

SPECIFICATION forming part of Letters Patent N o. 653,123, dated July 3,1900.

Application iilefl April 19, 1900.

`To @ZZ whom, t may concern,.-

' Beit known that l, ANTON E. H. J. THOELL- DEN,acitizen of the UnitedStates, and a resident of Ansonia, in the countyof New Haven andStatefofConnecticut, have invented a newfafnd Improved DrivingMechanism, of which the following is a full, clear, and exactdescription;

This invention relates to improvements in driving or power mechanism;and the object is to provide a driving mechanism of simple constructionadapted for general use-such, for inst-ance, as operating stationary ma.chinery,motorvehicles, and which will develop a desired combination ofspeed and power with a comparativelysmall amount of initial power,either manual or mechanical.

I will describe a driving mechanism em bodying my invention, and thenpointout the novel features in the appended claims.

Reference is to be had to the accompanying` drawings, forminga part ofthis specication, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is a perspective View of a driving mechanism embodying myinvention. Fig. 2 shows one of the driving ratchet-wheels with itsoperating-pawl in one position; and Fig. 3 is a similarview, but showingthe pawl in another position.

Referring to the drawings, l designates a powershaft having on itsopposite ends ratchet-toothed wheels 2 3. Coacting with theseratchet-wheels are operating-levers t and 5, the fulcrum-points 6 and 7of said levers being near the ratchet-wheels. I have here shown thelevers as fulcrumed in standards and also the shaft l as having itsbearings in boxes arranged on standards. It is obvious, however, thatthese parts mayhave bearings in hangers,depending upon the work requiredof the device. Each lever is provided with a pawl 8, designed to swingupward when the shorter end of the lever is moved downward, so as topass or disengage itself from the tooth; but when the other end of thelever is moved downward the pawl will have a stationary rigid connectiontherewith.

Carried by each lever and arranged above its pawl is a thrust-pin 9,movable longitlb bicycles,or the like- Serial No. 13,460. (No model.)

dinally in a boxing 10 on the lever and normally moved outward by meansof a spring 11, surrounding the shank portion of the thrnst-pin andarranged within the boxing. The object of the thrust-pin is to cause thepawl 8 to move quickly to its operative position after becoming releasedfrom a tooth of the wheel or, in other words, to prevent the pawl frombeing thrown too far upward orto a vertical line, where it will remainby its frictional engagement with its pivot-pin.

The longer members of the levers 4. and 5 are en gaged, as here shown,respectively, with cranks 12 and 13 on a crank-shaft 14.-. Each lever ismovable between antifriction-rollers 15 and 16, the rollers 15 beingjournaled on the crank-pins of the cranks, while the rollers 16 arejournaled on hangers 17, having swinging connection with the crank-pins.The crank-shaft may be driven by any desired power--such, for instance,as by a motor having band engagement with a pulley 18 on thecrank-shaft, or in case the device is to be used in connection with abicycle or the like pedals maybe attached to pedal-pins 19 Vand 20,connected to the cranks. `It is to be understood, however, that thelevers may be operated by other devices than that of a crank-shaft.Forinstahce, when the mechanism is used in connection with amotor-vehicle carrying a steam or similar engine pistonrods may beconnected by links or otherwise directly to the long members of thelevers. The levers are operated alternately up and down, one movingdownward while the other is moving upward, thusimparting continuonsmotion to the shaft 1, which may have any suitable connection with thedevice to be driven. For instance, when operating in connection with amotor-vehicle a band may extend from a band-wheel 21 on the shaft l to aband-wheel on the axle of the vehicle.

In operation whenthe longer member of a lever is moved downward itsshorter member will of course be moved upward, and during this upwardmovement the pawl 8, by engaging with a tooth of its wheel, will imparta rotary motion to said wheel. At this time the oppositelever will haveits shorter member moved downward, and the pawl 8 will swing to theposition indicated in Fig. 3, so as to re- IOO lease itself from a toothof its Wheel, and the thrust pin engaging with said pawl will quicklymove it to its operative position, as before mentioned.

It is obvious that by the short fulcrum of these levers a comparativelysmall amount of power on the end members of the levers will impart agreatly-increased power to the short members, and this power will beconsiderably augmented by the ratchet-wheels, which in themselves act aslevers on the power-shaft.

While I have shown but two ratchet-wheels and two levers, it is obviousthat the number may be increased, depending upon the speed desired. Thethrust-pins may be held from turning by any suitable means, such as afeather-key. 1

Having thus described my invention, I claim as new. and desire to secureby Letters Patent- 1. Adriving mechanism, comprsinga driving-shaft,ratchet-wheels mounted on said shaft, levers coacting with said Wheels,a vertically-swinging pawl carried by each lever, y

a boxing on the upper side of each lever, a spring-pressed thrust-pin ineach boxing for engaging with the pawls, and means for operating thelevers, substantially as specied.

2. Adrivingmechanism, comprisingadriving-shaft, ratchet-wheels mountedon said shaft,levers coacting with the wheels, a crankshaft, cranks onsaid shaft one for each lever, and rollers mounted on the cranks andbetween which the longer members of the levers engage, substantially asspecified.

3. A driving mechanism, comprisin ga driving-shaft, ratchet-wheelsmounted on said shaft, levers coacting with the wheels,a crankshaft,cranks on said shaft, one for each lever, and rollers between which thelonger members of the levers engage, one roller being journaled on thecrank-pin and the other roller being journaled on a hanger mounted `toswing on the crank-pin, substantially as specified.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

ANTON E. II. J. TIAIOELLDEN.

Vitnesses:

OTTO F. BERGER, AUGUSTA BERGER.

